--[[-- 按照通配符删除redisKey,并且返回这些key]]
local wildcardKey = KEYS[1]; -- 通配符key
local result = {};
for i, key in pairs(redis.call('KEYS', wildcardKey)) do
    redis.call('DEL', key);
    table.insert(result, '"' .. key .. '"');
end
local resultString = '[' .. table.concat(result, ',') .. ']';
return resultString;  -- 返回值类型是一个数组String  ["a","b"...]